Antifriction center-bearing.



PATENTED MAR. 12, 1907.

J. O. BARBER. ANTIFRIGTION CENTER BEARING.

APPLICATION FILED 1330.10. 1906.

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' ing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to cent beafin on the line as w" of Fig. 2, and

- with the upper bearing member .removed.

the center-bearing, 'the former of which, as

' Just outward 0 their hub ortions said heating members. 1 and 2 are ormed with annu- "provements inAntifriction Center-Bearings annular thrust-flange 10. Outward of the Unrrnn STATES JOHN o. BARBER, 0F

PATENT clarion.

onicAoo, ILLINOIS-H ANTIFRICTION CENTER-BEARING,

Specification of Letters Tatent.

ksdb fited Maren 12,1907. iaoa. strain. 347,108. 2

Application file'd' December 10,

To all whom it may concern:

' Be it known that I, JOIDTGI BARB-ER, a citizen of the United States, residingat Chicago, in the county of Cook and State of Illinois, have invented certain new anduseful-Im for Cars,- and I do hereby declare the follow- Fig. ,2 1s a-p an view of the center-bearing The numeral 1 indicates the upper memberand the numeral 2 the lower member of shown, has a supplementalv plate-section 3 rigidly secured thereto by bolts, rivets, or other devices. (Not shown.) The said up-. per and lower 'bearing'members are inpractice secured in the usual or any suitable way, res ectively, to thebody-bolster of the car an to the truck-bolster,'which bolsters are not shown in the drawings. The lower bearing member 2 is formed with a central perforation 4, and the upper bearing member 1 is formed with adepending sleeve or hub 5, that is telesco edinto said perforation-4;.

l'ar grooves 6. and 7, respectively, that afford an annular clearance-channel for aso-called retaining-ring, presently to be described. Outward of said grooves 6 and 7 said mem-. here 1 and 2 are formed with outwardlydiverging annular and conical roller-bearing surfaces or treads 8 and 9, respectively. At the outer extremity of the roller-bearing surface 9 said member2 is formed with an roller-bearing surface said member 1 is formed with an annular stop-shoulder 1.1 and a depending annular flange 12, that is tele- This is preferably .accomplished by jecting the said trunnions 14 through said slip' one upon the other under pivota movescoped around the stop-flange 10- of said mmber 2.

' Conical bearing-rollers 13 are interposed between the conical bearing-surfaces 8 and 9of the bearing members 1 and 2,. respec-" tively.- The outer and larger ends of said rollers 13 are rounded. andenga'ge-with and thrust against the vertically-aimed annular thrust-surfaces of the stop-fiange 10 and;- sto shoulder 12. Attheir innerends the ro'll drs 13 are formed withtrunnions 14, that are journaled in a retaining-ring 15. The

said retaining-ring 15 travels with the rollers 13 and works freely in the annular channel afforded by the grooves 7 and 8, respectivel of the bearing members 1 and- 2. I The sand roller-trunnions 14, while free for rotation in the said retaining-ring 1-5, are interlocked therewith, so that when the bearinggnernbers.

l and 2 are separated, either by accident or design, and the rollers and rim are removed from working position the said ring will hold the rollers in their proper relative positions, so that they Will-not become displaced or lost. Otherwise stated, there is an 'inter locking pivotal connection between .the noller trunnions and the said retaining-ring.

pro-

retaining-ring and passing pins or cotters 16' through said trunnions inward of said retaining-ring. 1

The very heavy'cars which are now coming into general use require center-bearings that will Withstand very great pressure, and the I. also require an antifriction center-bearing to releive, the center-bearing from "the, very great friction to which they-{would be subjected by a center-bearing in which the bearing members frictionally enga e and ments of the trucks with respect to the carbody.

In practice I have found that in antifriction center-bearings desi nod ;to withstand great pressure conical earing-rollers are very much better than balls, and that by placing the conical bearing-rollers in radial disposition with respect to the axis-of. the con 'ter-bearing, and in as close circumferential arrangement as possible an antifriction contor-bearing of the greatest possible pressurewithstanding efliciency is provided. Hence in this form of my improved center-bearing I place the conical rollers in such close '{uxtaposition that they occupy substantial y the and lower members of said center-bearing, the

' verging conical bearing-surfaces of the upper I and lower bearing members, is resisted by the sm-called -spacing-ring.

I through the sleeve scribed and as illustrated in thedrawings pyingf approximately entire annular space through which they travel under pivotal movements of the center-bearing. o

i In the arrangement described the outward thrust of the rollers, produced by pressure acting thereon through the outwardly-dihas in practice been found highly efficient as a center-bearing for cars.

-What I claim is-- 1.; The combination with upper and lower members of a center-bearing, formed'with conical roller-bearing surfacls, and at least one of which bearing members is provided with an annular thrust flange at the outer extremity of its conical roller-bearing surface, of a plurality of conical rollers interposed between the bearing-surfaces of said upper said rollers being closely positioned and occuthe entire space in which the rollers travel, said rollers having rounded outer ends that engage and thrust against said annular thrust-shoulder, and having trunnions at their inner ends, anda retainmg-ring inward of said rollers and in \which the trunnions of said rollers are journaled and with which .said trunnions are interlocked,substantially as described.

, '2. The combination with upper and lower -members ofa center bearing formed with conical roller-bearing surfaces and provided at the outerextremities of then conical roller-bearing surfaces with annular thrust shoulders, of a plurality of conical rollers interposed between the bearing-surfaces of the upper and lower members of said, centerbearing, the said rollers being. closely positioned and occupying approximately the entire space in which the rollers travel, said rollers having their conical and outer end surfaces intact, being rounded and arranged to en age and thrust against the annular thrust s lioulders of said bearingmembers, and the said rollers alsohaving trunnions at their inner ends, and a loose retaining-ring in which the trunnions of said rollers are journaled and with which said trunnions are interlocked with freedom for slight endwise movements, substantially as described.

In testimony whereof I affix in presence of two witnesses.

JOHN C. BARBER, I

my signature Witnesses:

MALIE HoEL, F. D. MERCHANT.

and the outer ends of said rollers 

